Motors: expansible chamber type – Independently operated timer – delay – pattern or cyclic control – Pattern or template control
Patent
1985-04-19
1985-12-31
Garrett, Robert E.
Motors: expansible chamber type
Independently operated timer, delay, pattern or cyclic control
Pattern or template control
91 40, 91429, 13762414, F15B 2102
Patent
active
045613435
ABSTRACT:
A sequencing valve mechanism utilized to control a pneumatic or hydraulic pressure medium from an on/off type pressure source to a two-chambered pneumatic or hydraulic appliance is disclosed. A pawl on a ratchet arm is driven around a ratchet island by the alternate application and withdrawal of pressure to the sequencing device. The ratchet arm is pivotally attached to a valve control arm which regulates a valve so as to control the output of a pressure source. The shapes of the ratchet island portions are such that two alternate applications and withdrawals of pressure are required for the pawl to complete one cycle about the island and, thereby, actuate the valve to different output positions only on alternate applications of pressure to the sequencing device.
REFERENCES:
patent: 3324770 (1967-06-01), Dahlman et al.
patent: 3779069 (1973-12-01), Berthold
patent: 3872876 (1975-03-01), Bachman
patent: 3971398 (1976-07-01), Taylor et al.
patent: 3993098 (1976-11-01), Meynig
patent: 4251898 (1981-02-01), Reichard
patent: 4367763 (1983-01-01), Brand
Garrett Robert E.
Jobst Institute Inc.
Meyer Richard S.
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